Charles john cooke



c. 1. COOKIE.

REPEATING ATTACHMENT FOR PHONOGRAPHS.

APPLICATION FILED MIG-l0. 1920.

1,373,382. Patented Mar.'29, 1 21.

2 SHEETS-SHEET C. J. COOKE.

REPEATING ATTACHMENT FOR PHONOGRAPHS.-

APPLICATION H-LED AUG-I01 I920. Patented Mar. 29,1921.-

2 SHEETSSHEET'2- lE g 3/ UNITED, STATES 'PATENT OFFICE.

crr-ARLns JOHN cooxnor W SHINGTON, DISTRICT or conunriam.

. nnrnnrrne nrrncirivrnnr-ron JPHOINOGRAPHS.

Specification of Letters Patent. Patefited Ma 29 192 Application filed August 10. 1920. Serial No. 4o2.54s.- Y

Toall whom it may concern Be it known that I, CHARLES JOHN Coonn,

a subject of the King of the United Kingdom of Great Britain and Ireland, residing at l Vashington, in the District of Columbia,

have invented certain new andgusei ul Improvements lIl Repeating Attachments tor V Phonographs; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will ,en-

able Others S ed in the art to which-it abpertains to make and use the same.

My invention relates to a repeating mechanism for phonographs, and more especially to means for automatically replayifng or suc cessively reproducing a phonographic record indefinitely, within the range or the par ticuiar motor employed, without interruption.

. Phonographs and instruments or like character are extensivelyempioyed for the' purpose of producing dance music, and in this use obviously it is desirable to repeat the selection indefinitely, :andwithout the interruptions i'ncidentto replacing the reproducing needle by hand.

An obj ect of the present invention therefore is to provide a simple, inexpensive,

eflicient, and self contained attachment for phonographs, capable ,of accurately producing the results above indicated.

A'further object is the production of an i attachment of the'character indicated, by

' end of therecord, is instantly and automatically returned to its starting point, and

agency of which thereproducer is automatically I'itlSBd. each time its'needle', reaches the in like manner lowered into operative engagement with the record groove, practically without interruption.

Another. object of this invention, when used in connection with phonographs not equipped with automatic stopsvis that or" preventing what may be termed over-running of the record. Thatis to say, if, an

operatoris otherwise'engaged at the completion of a moreor less expensive record,

the worst that can happen is merely a re turn to the starting point, and a partial or complete reproduction of the composition.

A very important feature of this invention is the utilization of the motor driven record itself, as the means oflifting the reproduc- .-ing needle clear of the record, instantly returning same to its starting point,"and then music, it is equally applicable in like manner records of any character.

and practically accurately replacing it in operative contact without the possibility of a scratch or false movement. I

The present invention is applicable to sound reproducing machines, generally, herein referred to as'phonographs, but by way or" exemplification the drawings forming part of this application disclose a machine of the Victor type employingvhorizontally arranged disk records. And, while the primary object of this invention is that V oirep'eating or continuously playing dance to repeating In the accompanying drawings which form part of this application for Letters Patent, and whereon like characters indicate corresponding parts in the several views:

Figure l is a top plan view of myre'peatmg attachment in position upon a disk record,w1th its operating arm in retracted normal position, the tone arm and sound box being at starting point upon the record;

Flg. 2 is a fragmentary view also in plan showing the operating arm projected at the lnstant of delivering the sound box to its outermost or repeating position;

Flg. 3 is a side elevation of the invention showing same at the instant of picking up a sound box for replacement, and ."also in dotted. lines,'the sound box as the end of the operatingarm;

,Fig. dis. a top planvlew of the invention detached;

- Fig. 5 is avertical central section through phonograph cabinet, B an ordinary phonographrecord of the disk type, C the usual" power-driven arbor upon which recordifB is loosely centered, 'D a tone-arm adapted to sweep over record B in the arc of a circle,

and E a verticallymovable sound-box or" .reproducer, ,pivotally supported as at F by said tone arm, the parts mentionedall betion.

ing of ordinary and. well-known construcreplaced by posite a reverseor Fig. '5. I

length. This adjustability is accomplished by the employment of anouter arm sec-' The invention proper is self-contained and comprises abase plate '10 of relatively thick metal, preferably shaped to tially conform with the smoothcentral sursubstanface of a phonograph record, and centrally perforated as'at 11.to receivetheprotruding end of an arbor C, as shown by Figs. 3, 5 and 6. Preferably base 10 is die-cast or otherwise formed with a circular. cam or cam-track 12 at one side ofits center, and withan uprising boss 13 positioned within the center of said cam; also with a second boss 14 rising from the surface of the base plate. for purposes which will later appear.

By reference to the cam-track l2 aforesaid it will be seen to include a relatively quick upward incline or camsurface 15 at its front center (Fig. 6), and at a point opdownwa'rd incline or cam surface 16 (Fig. 5), while in boss 13 is mounteda vertical stud 17 shouldered and threaded at both ends as best shown by Rotatably mounted upon stud 17, and therefore eccentrically positioned, is a turnblock 18, having rearward and lateral eX- tensions 19 toserve as a counterweight, and also a circular, relatively thin, base flange '20, serving as a cover for cam track 12 which it directly surmounts. This turnblock 18 is offset above and below by' ordinary washers' 21, 21, and is rotatably held in position byagency of a knurled nut 22 threaded upon the upper end of stud 17, and 35 serving also as aconvenient means of liftin the attachment.

livoted at opposite sides of block 18 by means of a horizontal pivotpin 23,. is the innerbifurcated end 24 of a main operat ing arm 25, which, in the present instance, isshown, in cross section by Fig. 6, as of inverted channel form, and adjustable in tion 26, secured by Ineans'of screws 27 27,

I and screw'holes 2'8, 28, used selectively according'to the degree of extension required.

VThe said two-part adjustableoperating arm 25-26,' terminates in a rearwardly and downwardly extending working shoe or trailing surface 29, having longitudinal and.

transverse undercut file teeth 30, constituting a roughened hatched surface for purposes later to appear.

Pivoted horizontally between the opposite sides oflever 25, near its supporting turn- .block 18, is a roller-carrying frame 31, having downwardly extending front and rear arms 32. 32 carrying an anti-friction roller 'or wheel 33, traveling directly upon circular cam-track 1 2 with stud 17 as its center. The

outer end ofsaid bearingframe 31 is procentrally in the operating arm 25 and sur vided with an adjusting screw 34;, swiveled mounted by a knurled head 35, as a means of raising or lowering the outer end of the operating arm. This head 35 is crossed by a strap" 36 and is locked in adjusted positions by engagement of said strap when drawn down by agency of a set screw 37 as best shown by Fig. 5.

For the purpose of admitting the said roller or wheel 33, the can1-covering-fiange 20 is cut back at its front center as at 38; and, as also shown by Fig. 5, a light spring '39 is located within the confines of the camtrack 12, for the purpose of returning arm 25 to its normal position after each needlereplacing operation.

, When in normal position, as shown by Figs. 1, 3, l and 5, thisoperating arm rests against a rubber, or rubber surfaced stop 10, rising from the boss 14: hereinbefore mentioned. And when desired a portion or all of the under surface of base plate 10 may be suitably roughened as shown for examprises an operating or needle replacing arm ecc'entrically positionedwith relation to a phonographic record, the said arm at its outer end being projected in the path of the needle carrying elements at a point approximating the end of a record. groove, and

means for automatically causing said'opcrating arm to engage said needlecarrying element and to replace same at approximately' the outermost or repeating position.

The operation of this invention, as embodied 1n the present illustrations, may be briefly set forth as follows.

Base plate 10 being first centered upon arbor C, by means of itscentral aperture 11,

rests directly upon the surface of record B .within the limits of its usual and ordinary reproducing grooves. In this position it will be particularly noted that the main pivot pin or supporting stud 17 is eccentric to the center of rotation of said record B and base plate 10; also that all parts of the repeating attachment normally occupy the position indicated by Figs. 1, 3, 4 and 5.

The phonograph motor (not shown) now being started in the usual manner, base plate 7 .10 with all attendingparts rotatesstea'dily about arbor C, in the direction indicated by an arrow in the several plan views, the reas usual in the spiral -record producing needle in the meantime traveling groove toward thecenter of record B. r j

I At approximately the Completion of its travels, a needle-bearing element, such as the sound box E, is automatically conducted into the path of'the inclined shoe 29 and is'engaged thereby as shown by Fig. 3 of the drawings. The outer extremity 29 of operneedlein the meantime having'been autoating arm being thus arrested, further rotation of the attachment instantly throws said arm upon its eccentricallylocated piv-" otal support 17, from the osition shown by Fig. '1 to that shownby ig. 2; or, from the normal position shown by full lines in- Fig. 3, to the outermost replacing position indicated by dotted lines in said figure, the

matically raised and lowered to avoid scratchlng over the record.

At the instant of contact between the.

shoe 29 and a needle carrying element, such as E, the roller 33 travels up incline 15 thus quickly elevating the outer end29 of operating arm 25, and consequently the said needle-carrying element, to positively lift I the needle out of the record groove and clear of the rotating record. Roller 33 in its raised position then travels upon the horizontal portion of the cam track 12,

while the operating arm 25 is being projected as aforesaid by reason of its B00811; tri'c pivotal mounting upon stud 17 until reaching its outermost position shown by Fig. 2, whereupon the said roller 33 descending' incline 16, causes the needle-carrying element to descend accordingly and lowers the reproducing needle again into operative contact.

Thus lowered the outer extremity of the operating arm is automatically carried beneath the said needle-carrying element and returned by action of spring 39 until arrested'by engagementwith stop 40, in a position to repeat the operation so long as the phonograph motor keeps the record movmg.

Adjustment in length of the operating arm and its attending parts may be readily effected to provide for either ten or twelve inch records by Withdrawal andreplacement of screws 27; and in elevation is effected, by agency of screw 34, as the means of raising or lowering roller 33 as clearly illustrated by Fig. 5, and when such adjustment has been accomplished said screw may be locked in its adjusted position by agency of strap 36, and set screw 37 by 1 which latter the strap may be drawn into close frictional contact with the knurled head 35 of the adjusting screw.

H 'ving thus described my invention, what I now claim and desire to secure by Letters Patent is: 7

1. In aphonograph attachment the combination ofa supporting base, an arm eccentr cally posltloned on said base, means co- 7 operating with said arm for automatically lifting a reproducing needle, and means for returning the same to its starting point.

2. In a phonograph attachment the combination of a supporting base, an arm eccentrically positioned on said base, means cooperating with said arm for automatically lifting and lowering a nee'dle,'and means for causing said arm to effect a return of said reproducing needle to its starting-point.

In a phonograph attachment the combination of a supporting base plate, an arm eccentrically positioned on said plate, and means cooperating w th sald arm for causing it to control a reproducing needle to lift and return the same to its starting point. r

4; In a phonograph attachment the combination of a supporting base, an extensible arm eccentrically positioned on said base,

and means for causing said arm to control a reproducing needle to automatically return the same to 1ts startlng point.

5. In'a phonograph attachment the combination of a supporting base, an arm eccentrically positioned on said base, a shoe upon said arm having a roughened surface,

and means for causing said arm and shoe" to control a reproducing needle to auto- 7 matically return the same to its starting point.

6.,In a phonograph attachment the combination of a supporting base, an arm eccentrioally positioned on said base, a shoe upon the free endyof said arm having a rougheneditrailing surface, and means for causing said arm and shoe to control a reproducing needle to automatically return the same to its starting point. V

7. In a phonograph .attachment the combination of a supportingbase, an arm eccentricallypositioned on said base, a shoe at the outer end of said arm having a rearwardly declining surface, and means for causing said arm and shoe to control a reproducing needle to automatically return the same to its starting point.

'8. Ina phonograph attachment the combination of a supporting base, an arm eccentrically mounted on said base, means for means for causing said arm to control a reproduclng needle to automatically return the same to its starting point.

10. In a phonographattachment the combination of a supporting base, a turn-block eccentrically mounted on said base and provided With a counter-balance, an operating arm carried by said block, .and means for causing said. arm to automatically control a reproducing needle to return the same to its starting point.

. crating arm carried by saidblock and ver-':

11. In a phonograph attachment the combination of a supporting base, a turn-block eecentrically mounted on said base, an optically movable With relation thereto, and means for causing said arm to control a reproducing needle to automatically return the same to its startingpoint. r

12. In a phonograph attachment the com- 1 bination of a supporting base, an operating arm eccentric-ally pivoted upon said base, means for causing sald arm to return a reproducing needle to its starting point, and

a cam arranged and adapted to elevate said arm at the beginning of said return move ment and to perm1t of lowering the same at the completion or said movement 18. In a phonograph attachment the combination of a supporting base, an operating arm eccentrically "pivoted upon said base, means for causing said arm to be rotated upon its pivotal connection to return 'a re a spring for returning said arm to its normal position. 7

let. In a phonograph attachment the combination of a supporting base, a cam-track eccentrically positioned upon said base, an operating arm pivot-ally supported at the center of saidcam-track, means for causing said arm to automatically return a reproducing needle to its starting point, and means carried by the arm traveling upon said track whereby the arm is first raised and then lowered during its outward move .ment, and means for returning all parts to normal positions.

15. In a phonograph attachment the combination of a supporting base having a roughened under surface, an operating arm eccentrically pivoted upon said base, means for causing said arm to automatically return a reproducing needle to its starting point, a cam surface for elevating said arm at the beginning of such return movement, a cam surface for permitting said arm to be lowered at the termination or said return movement, and means for replacing the operating arm in normal position after each replacement of the reproducing needle.

In testimony whereof I ailiX my signature, in presence oitwo subscribing Witnesses.

V crinntns JOHN COOKIE. Witnesses W lil. Drnn,

JAMns H. MARK. 

